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Onkyo TX-NR 646

alaTest has collected and analyzed 499 reviews of Onkyo TX-NR 646. The average rating for this product is 4.2/5, compared to an average rating of 4.1/5 for other Receivers & Amplifiers for all reviews. Reviewers really like the reliability and design. The size and price are also mentioned favorably.

usability, price, size, design, reliability

We analyzed user and expert ratings, product age and more factors. Compared to other Receivers & Amplifiers the Onkyo TX-NR 646 is awarded an overall alaScore™ of 94/100 = Excellent quality.

Review analysis

(Based on 499 reviews)

Expert Reviews  

User Reviews  

Showing 355 review(s)

Expert Reviews User Reviews

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Showing 1 - 189 of 355 Show Reviews: in English | in other languages (144)

Consumer review by: (amazon.co.uk)

Amazon.co.uk review summary for Onkyo TX-NR 646

 

alaTest has collected and analyzed 12 user reviews of Onkyo TX-NR 646 from Amazon.co.uk. The average user rating for this product is 4.6/5, compared to an average user rating of 4.3/5 for other Receivers & Amplifiers on Amazon.co.uk. Reviewers really like the usability. The price is also mentioned favorably, but there are some critical opinions about the reliability.

design, price, usability

reliability

92% of the reviews on Amazon.co.uk give this product a positive rating.

This summary is based on the products: Onkyo TXNR646 Home Cinema Receiver (Black)Onkyo TXNR646 Home Cinema Receiver (Black)

Nov, 2017

Consumer review by: (amazon.com)

Amazon.com review summary for Onkyo TX-NR 646

 

alaTest has collected and analyzed 167 user reviews of Onkyo TX-NR 646 from Amazon.com. The average user rating for this product is 3.7/5, compared to an average user rating of 4.0/5 for other Receivers & Amplifiers on Amazon.com. Opinions about the reliability and size are on the whole positive. The design and price also get good comments.

usability, price, design, size, reliability

74% of the reviews on Amazon.com give this product a positive rating.

This summary is based on the products: Onkyo TX-NR646 7.2-Channel Network A/V ReceiverOnkyo TX-NR646 7.2-Channel Network A/V Receiver

Nov, 2017

Expert review by: Ty Pendlebury (cnet.co.uk)

Onkyo TX-NR646 review

 

It is written in the AV bible that the industry "shalt invent a new doohickey every year that compels the buying public to back its wallets up to the till and empty the contents on new gear." Last year that doohickey was Dolby Atmos ; this year it's...

The fully-loaded Onkyo TX-NR646 delivers cutting-edge technologies such as both Dolby Atmos and DTS-X surround formats, in addition to AirPlay, Wi-Fi and Bluetooth. Its sound quality is excellent for movie replay with exciting sonics and class-leading...

The Onkyo TX-NR646's Dolby Atmos height channel capabilities are limited to only the front-left and -right channels, not the surround height channels, and the receiver is only DTS:X "compatible" until an update is released later in 2015. Its external...

Considering the Onkyo TX-NR646's generous feature set and superlative sonic skills, it's one heck of a value.

Jul, 2015

Expert review by: Ty Pendlebury (cnet.com)

Onkyo TX-NR646 review

 

It is written in the AV bible that the industry "shalt invent a new doohickey every year that compels the buying public to back its wallets up to the till and empty the contents on new gear." Last year that doohickey was Dolby Atmos ; this year it's...

The fully-loaded Onkyo TX-NR646 delivers cutting-edge technologies such as both Dolby Atmos and DTS-X surround formats, in addition to AirPlay, Wi-Fi and Bluetooth. Its sound quality is excellent for movie replay with exciting sonics and class-leading...

The Onkyo TX-NR646's Dolby Atmos height channel capabilities are limited to only the front-left and -right channels, not the surround height channels, and the receiver is only DTS:X "compatible" until an update is released later in 2015. Its external...

Considering the Onkyo TX-NR646's generous feature set and superlative sonic skills, it's one heck of a value.

Jul, 2015

Expert review by: Tony Leotta (audioholics.com)

Onkyo TX-NR646 and TX-NR747 Atmos / DTS:X AV Receivers Preview

 

Onkyo's TX-NR646 and TX-NR747 AV receivers are among the FIRST DTS:X receivers on a manufacturers website. Dolby Atmos and DTS:X ready as well as having 4k Ultra HD, Bluetooth and Wi-Fi. Upgrade time?

If you’re looking to the future for the next generation of sound it’sgoing to be hard to beat either of these AV receivers. Obviously both receivers willneed a firmware update to support the DTS:X format. Like the Pioneer VSX-90,they only have 7...

Jun, 2015

Expert review by: Ty Pendlebury (cnet.com.au)

Powerful, feature-packed receiver amps up the thrills

 

It is written in the AV bible that the industry "shalt invent a new doohickey every year that compels the buying public to back its wallets up to the till and empty the contents on new gear." Last year that doohickey was Dolby Atmos; this year it's...

The fully-loaded Onkyo TX-NR646 delivers cutting-edge technologies such as both Dolby Atmos and DTS-X surround formats, in addition to AirPlay, Wi-Fi and Bluetooth. Its sound quality is excellent for movie replay with exciting sonics and class-leading...

The Onkyo TX-NR646's Dolby Atmos height channel capabilities are limited to only the front-left and -right channels, not the surround height channels, and the receiver is only DTS:X "compatible" until an update is released later in 2015. Its external...

Considering the Onkyo TX-NR646's generous feature set and superlative sonic skills, it's one heck of a value.

Jul, 2015

Consumer review by: iceplayer929 (cnet.com)

Great name, great value!

 

Comparing to different brand items, at similar cost, this thing blows them out of the water! I've tested Dennon, Marantz, and Yamaha within +200$ of this price range, and I really felt this one will get you the best bang for your buck. Tons of HDMI...

Power, Inputs.

Aug, 2015

Consumer review by: JOE M. (newegg.com)

Jaw dropping performance and at insane price

 

This replaced a $2500 Arcam receiver that was 11 yrs old and my only regret is the Arcam didn't break sooner.

Sound and Video quality is superb. Power is impressive. Switching is fast.

Zone 2 will only send out an analog source. So I connected a zone 2 speaker to the center channel for dialog to hear tv in the other room.

May, 2016

Consumer review by: Kevin T. (newegg.com)

Onkyo's Rock!

 

Onkyo has been building electronics since the early 40's, and nobody puts power supplies, transformers or heat-sinks like they do.

The sound and power from Onkyo is crystal clear and raw. This is the third A/V receiver I have had. The first was purchased in Circuit City's infancy and gave me many, many hours, but had no HDMI ports. I have a TX-NR709 that developed a sound problem....

N/A

May, 2016

Consumer review by: wayne c. (newegg.com)

Onkyo TX-NR646 7.2 Network Ch A/V Receiver with Wi-Fi & Bluetooth

 

the more I use it the more I like it.

has everything I want

none

Oct, 2015

Consumer review by: joseph p. (newegg.com)

budget theater gets upgrade

 

great receiver, replaced my yamaha v475. Only added atmos speakers but the onkyo sounds much richer and fuller than the yamaha with same speakers. Onkyo android app is nice also

Easy to setup sounds great features

The 646 has 2nd monitor option, didn't need it but its available so might as well use it. I use a 2nd monitor for my laptop so i hooked receiver up to the monitor as well, receiver handicaps hdmi output on both monitors when i change the hdmi input...

Oct, 2015

Consumer review by: Jacqueline P. (newegg.com)

budget theater gets upgrade

 

great receiver, replaced my yamaha v475. Only added atmos speakers but the onkyo sounds much richer and fuller than the yamaha with same speakers. Onkyo android app is nice also

Easy to setup ; sounds great ; features

The 646 has 2nd monitor option, didn't need it but its available so might as well use it. I use a 2nd monitor for my laptop so i hooked receiver up to the monitor as well, receiver handicaps hdmi output on both monitors when i change the hdmi input...

Oct, 2015

Product Specifications

Audio

Audio output channels:7.2
Dynamic power per channel (3 Ohm):240
Dynamic power per channel (4 Ohm):210
Dynamic power per channel (8 Ohm):120
Frequency range:10 - 100000
Impedance:16
Input impedance:47000
Input sensitivity:200
Output impedance:470
Power output per channel (20-20KHz@8 Ohm):160
Signal-to-Noise Ratio (SNR):100
Total Harmonic Distortion (THD):0.08

Certificates

Digital Living Network Alliance (DLNA) certified: Yes

File formats

Audio formats supported:AAC, FLAC, LPCM, MP3, OGG, WAV, WMA

Inputs

Audio (L,R) in:8
Component video (YPbPr/YCbCr) in:2
Composite Video In:3
Digital audio coaxial in:1
Digital audio optical in:2
HDMI In:8
USB ports quantity:1

Networking

Bluetooth: Yes
Bluetooth profiles:A2DP, AVRCP
Bluetooth version:2.1+EDR
Ethernet LAN: No
Wi-Fi: Yes

Optical Drive

Optical drive included: No

Other features

Package depth:42.3
Package height:28.7
Package width:57

Outputs

HDMI Out:2
Number of HDMI Outputs:2

Packaging Content

AM antenna: Yes
Batteries included: Yes
FM antenna: Yes
Manual: Yes

Packaging Data

Package weight:12.5

Power

AC input frequency:50/60
AC input voltage:220-240
Power Consumption (Standby):0.15
Power consumption (typical):630

Radio

AM band range:522 - 1710
FM band range:87.5 - 107.9
Internet Radio: Yes
Preset stations quantity:40
Supported radio bands:AM, FM

Technical Details

AirPlay: Yes
Audio amplifier: Yes
Audio Decoders:Dolby TrueHD, DTS-HD Master Audio
Audio Return Channel (ARC): Yes
Bi-amping: Yes
Colour of product:Black / Silver
Damping factor:60
Deep colour support: Yes
Handheld remote control: Yes
On Screen Display (OSD): Yes
Quantity:1
x.v.Color support: Yes

Video

3D: Yes

Weight & Dimensions

Depth:32.9
Height :17.4
Weight:9.4
Width:43.5